<template>
  <el-form
    :model="ruleForm"
    status-icon
    :rules="rules"
    ref="ruleForm"
    label-width="100px"
    class="demo-ruleForm"
  >
    <el-form-item label="密码" prop="pass">
      <el-input type="password" v-model="ruleForm.pass" autocomplete="off"></el-input>
    </el-form-item>
    <el-form-item label="确认密码" prop="checkPass">
      <el-input type="password" v-model="ruleForm.checkPass" autocomplete="off"></el-input>
    </el-form-item>
    <el-form-item label="年龄" prop="oldPass">
      <el-input v-model.number="ruleForm.oldPass"></el-input>
    </el-form-item>
    <el-form-item>
      <el-button type="primary" @click="submitForm('ruleForm')">提交</el-button>
      <el-button @click="resetForm('ruleForm')">重置</el-button>
    </el-form-item>
  </el-form>
</template>
<script>
export default {
  data() {
    var checkOldPass = (rule, value, callback) => {
      if (!value) {
        return callback(new Error('年龄不能为空'))
      }
      setTimeout(() => {
        if (!Number.isInteger(value)) {
          callback(new Error('请输入数字值'))
        } else {
          if (value < 18) {
            callback(new Error('必须年满18岁'))
          } else {
            callback()
          }
        }
      }, 1000)
    }
    var validatePass = (rule, value, callback) => {
      if (value === '') {
        callback(new Error('请输入密码'))
      } else {
        if (this.ruleForm.checkPass !== '') {
          this.$refs.ruleForm.validateField('checkPass')
        }
        callback()
      }
    }
    var validatePass2 = (rule, value, callback) => {
      if (value === '') {
        callback(new Error('请再次输入密码'))
      } else if (value !== this.ruleForm.pass) {
        callback(new Error('两次输入密码不一致!'))
      } else {
        callback()
      }
    }
    return {
      ruleForm: {
        pass: '',
        checkPass: '',
        oldPass: ''
      },
      rules: {
        pass: [{ validator: validatePass, trigger: 'blur' }],
        checkPass: [{ validator: validatePass2, trigger: 'blur' }],
        oldPass: [{ validator: checkOldPass, trigger: 'blur' }]
      }
    }
  },
  methods: {
    submitForm(formName) {
      this.$refs[formName].validate(valid => {
        if (valid) {
          alert('submit!')
        } else {
          console.log('error submit!!')
          return false
        }
      })
    },
    resetForm(formName) {
      this.$refs[formName].resetFields()
    }
  }
}
</script>    
